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连接器插接错误98款宝马740轿车采用V8发动机,有2个进气管道,2个电子节气门和2个节气门位置电动机。2个节气门体的导线连接器外形一样,非常容易插接错误。故障现象一辆98款宝马740车,出现发动机怠速转速高达1 200 r/min,挂挡起步时有明显冲击的现象。故障诊断与排除首先验证故障现象。起动发动机,发动机转速迅速上升到1 200 r/min左右,起步挂挡时冲击严重。根据以往经验分析,发动机保持高怠速不变的原因大多是节气门位置传感器因损坏而不能传给发动机控制单元(DME)正确的
Connector Mating Error 98 The BMW 740 sedan features a V8 engine with two intake ducts, two electronic throttle and two throttle position motors. 2 throttle body wire connector shape, very easy to plug error. Symptoms A 98 BMW 740 car, the engine idling speed up to 1 200 r / min, hanging block when there is a clear impact of the phenomenon. Fault diagnosis and troubleshooting First verify the symptoms. Start the engine, the engine speed quickly rose to 1 200 r / min or so, the start of the block when the impact of serious. According to past experience, the reason why the engine keeps high idle speed is mostly that the throttle position sensor can not be transmitted to the engine control unit (DME) due to damage